WO2023126746A1 - Procédé et installation de fabrication de barres d'armature pour des éléments profilés pour des dormants de fenêtre/porte - Google Patents

Procédé et installation de fabrication de barres d'armature pour des éléments profilés pour des dormants de fenêtre/porte Download PDF

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Publication number
WO2023126746A1
WO2023126746A1 PCT/IB2022/062317 IB2022062317W WO2023126746A1 WO 2023126746 A1 WO2023126746 A1 WO 2023126746A1 IB 2022062317 W IB2022062317 W IB 2022062317W WO 2023126746 A1 WO2023126746 A1 WO 2023126746A1
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WO
WIPO (PCT)
Prior art keywords
bar
fact
phase
ending
residual
Prior art date
Application number
PCT/IB2022/062317
Other languages
English (en)
Inventor
Andrea Vaccari
Original Assignee
Graf Synergy S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Graf Synergy S.R.L. filed Critical Graf Synergy S.R.L.
Publication of WO2023126746A1 publication Critical patent/WO2023126746A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/002—Resistance welding; Severing by resistance heating specially adapted for particular articles or work
    • B23K11/0073—Butt welding of long articles advanced axially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/02—Pressure butt welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/04—Flash butt welding
    • B23K11/046—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/34—Preliminary treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
    • B23K28/02—Combined welding or cutting procedures or apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/28—Beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys

Definitions

  • the present invention relates to a process and plant for the manufacture of reinforcing bars for window/door frames.
  • the reinforcing bars are generally made of metallic material, such as steel or other alloys, and are inserted into the internal cavity of the profiled elements in order to impart greater strength and toughness to the final window/door frame.
  • the reinforcing bars serve as supports for further mechanical parts necessary for the operation of the window/door frame, such as hinges, handles, locking systems, etc.
  • the known manufacturing processes and related plants involve the cutting of metal bars depending on the length of the profiled element to be reinforced, to obtain, precisely, the relevant reinforcing bar.
  • the metal bars can be obtained, e.g., by means of extrusion of molten metallic material or by folding metal sheets.
  • Metal bars are generally of extended lengths, such as e.g. 5-6 meters, and can be cut numerous times to obtain as many reinforcing bars.
  • the reinforcing bars can be gradually inserted directly into the relevant profiled element at the end of each cutting operation or stored together and installed at a later time.
  • metal bars are provided with dimensions having a length of about 5-6 meters and the cutting operations inevitably cause the formation of residual ending portions that are too short in size to be used as reinforcing bars.
  • Such residual bars are, therefore, discarded and a new metal bar is subjected to cutting. After a first bar is machined, then, the remaining residual bar must be removed from the production line to make room for a second bar.
  • This operation in addition to interrupting the production operations and consequently lengthening the related timeline, also causes the formation of a large amount of waste products that greatly impacts the production costs of the reinforcing bars.
  • the main aim of the present invention is to devise a process and a plant for the manufacture of reinforcing bars for profiled elements for window/door frames which allow avoiding the formation of the waste products.
  • Another object of the present invention is to devise a process and a plant for the manufacture of reinforcing bars for profiled elements for window/door frames which allow avoiding interruptions in the manufacturing process and optimizing the operating schedules.
  • a further object of the present invention is to devise a process and plant for the manufacture of reinforcing bars for profiled elements for window/door frames which allow keeping production and operating costs of the production plant low.
  • Another object of the present invention is to devise a process and plant for the manufacture of reinforcing bars for profiled elements for window/door frames that can overcome the aforementioned drawbacks of the prior art within the framework of a simple, rational, easy and effective to use as well as cost- effective solution.
  • Figure 1 is an axonometric view of the plant according to the invention.
  • Figure 2 is an axonometric view of the plant in the execution of a phase of positioning the residual bar of the process according to the invention
  • Figure 3 is an axonometric view of the plant in the execution of a phase of positioning the second bar of the process according to the invention
  • Figure 4 is an axonometric view of the plant in the execution of a sub-phase of application of the electrode assemblies of the process according to the invention
  • Figure 5 is an axonometric view of the plant in the execution of a sub-phase of joining of the process according to the invention.
  • Figure 6 is a top view of the welding means in the execution of a sub-phase of joining of the process according to the invention.
  • Figure 7 is a side view of the welding means in carrying out a sub-phase of compression of the process according to the invention.
  • Figure 8 is an axonometric view of the plant in the execution of a phase of cutting the welded bar of the process according to the invention.
  • reference numeral 1 globally denotes a plant usable in the embodiment of this process for the manufacture of reinforcing bars for profiled elements for window/door frames.
  • the process according to the invention first comprises one phase of providing at least one first bar 2 and at least one second bar 3 made of at least one metallic material.
  • the bars 2, 3 are elongated bodies made of at least one metallic material, e.g., iron, steel or other alloys, and can be obtained, e.g., by extrusion of such a molten metallic material or by folding the metal sheets.
  • the bars 2, 3 are hollow and have a square cross section.
  • the bars 2, 3 are provided with a section of different shape, e.g., “U-shaped”, “L-shaped” or be of the slab-shaped type. Likewise, it cannot be ruled that the bars 2, 3 are solid, i.e., not hollow.
  • the bars 2, 3 extend along relevant longitudinal directions and are each provided with a first ending surface 4 and with a second ending surface 5 substantially perpendicular to the relevant longitudinal direction.
  • the plant 1 comprises holding means 6 adapted to hold at least the first bar 2 and the second bar 3.
  • the holding means 6 are adapted to hold a plurality of bars, as will be better described later in this disclosure.
  • only a first bar 2 and a second bar 3 will be referred to in the remainder of this disclosure.
  • the process comprises a phase of cutting the first bar 2 to obtain at least one reinforcing bar 100 insertable in a relevant profiled element for window/door frames and a residual bar 7 provided with the second ending surface 5.
  • the plant 1 is provided with cutting means 8 adapted to cut the first bar 2 and through which the phase of cutting is carried out.
  • the first bar 2 can be cut several times to obtain as many reinforcing bars 100.
  • the process then comprises repeating the phase of cutting the first bar 2 depending on the length of the desired reinforcing bars 100.
  • the residual bar 7 corresponds to the ending section of the first bar 2, resulting from the cutting operations, and which is too short to be used as reinforcing bar 100.
  • the process involves a phase of positioning the second bar 3 aligned with the residual bar 7 with respect to a direction of forward movement D substantially parallel to the longitudinal directions, with the first ending surface 4 of the second bar 3 facing the second ending surface 5 of the residual bar 7.
  • the plant 1 comprises positioning means 9 adapted to move each of the bars 2, 3, 7 along the direction of forward movement D.
  • the process then comprises a resistance butt welding phase of the second bar 3 and of the residual bar 7 carried out by means of a current flow through the ending surfaces 4, 5 facing each other to obtain a welded bar 10.
  • the plant 1 comprises resistance welding means 11 adapted to carry out this phase of welding.
  • butt welding refers to a type of welding carried out by means of the juxtaposing of the ending surfaces 4, 5 of the second bar 3 and of the residual bar 7.
  • the resistance butt welding is an autogenous pressure welding method in which the metallic material is heated by electrical resistance.
  • the welded bar 10 is, therefore, formed by the residual bar 7 and by the second bar 3 joined together in a welding area 12.
  • the process comprises the repetition of the phases of cutting, positioning and welding for the welded bar 10.
  • the welded bar 10 then undergoes the phase of cutting again to produce new reinforcing bars 100 and any new residual bar 7 is welded back to a subsequent bar.
  • this process allows avoiding the formation of waste products and to carry out continuous production of the reinforcing bars 100.
  • the residual bar 7 resulting from the cutting operations of a first bar 2 is, in fact, always recovered by means of welding to a subsequent second bar 3.
  • the phases are carried out continuously on the same line of work 13 extending along the direction of forward movement D.
  • the line of work 13 is partly defined by the holding means 6, by the resistance welding means 11 and by the cutting means 8, arranged in succession with each other along the direction of forward movement D.
  • This process allows avoiding interruptions in the production process, thus reducing the time and costs associated therewith.
  • the resistance welding means 11 comprise electrode assemblies 14, 15 applicable to the second bar 3 and to the residual bar 7 and adapted to determine the current flow.
  • the phase of welding comprises a sub-phase of application of the electrode assemblies 14, 15 to the second bar 3 and to the residual bar 7 at the point where the relevant ending surfaces 4, 5 are located to determine the current flow.
  • the electrode assemblies 14, 15 comprise a first electrode assembly 14 applicable to the residual bar 7 and a second electrode assembly 15 applicable to the second bar 3.
  • the resistance welding means 11 also comprises a transformer assembly 16 connected to the electrode assemblies 14, 15.
  • the connections between the electrode assemblies 14, 15 and the transformer assembly 16 are not shown in the figures.
  • the phase of welding also comprises a sub-phase of joining the ending surfaces 4, 5 to each other to cause the formation of an electric arc.
  • an electric arc is an electric discharge that is generated between two metal parts which are moved close together and connected to an electric circuit.
  • the sub-phase of joining is carried out by means of mutual approach of the second bar 3 and of the residual bar 7.
  • the electric arc is accompanied by a strong development of heat by the Joule effect, which allows even very high temperatures to be reached (3,000°C - 4,000°C) leading to softening and eventually melting the metallic material, very quickly.
  • the electric arc causes the formation of plasma involving heat generation.
  • the current is in the range of 1 KA to 20 KA.
  • the current is in the range of 5 KA to 10 KA.
  • the reduced operating times also allow limiting the formation of oxides of the metallic material.
  • oxidation reactions affecting the metallic material of the bars are even more favored and could result in the generation of large amounts of metal oxides.
  • the presence of metal oxides makes the welding area insufficiently resistant to mechanical stress, thus compromising the entire welding process.
  • the sub-phase of joining is carried out so as to lead the metallic material to softening.
  • the sub-phase of joining is carried out for a time of between 0.1” and 10”, preferably between 1” and 5”, even more preferably between 1.5” and 2”.
  • the sub-phase of joining is carried out in such a way as to cause the formation of a sufficient amount of softened metallic material that imparts suitable strength to the welding area but, nevertheless, does not result in the creation of an excessively protruding weld bead.
  • this phase of resistance welding allows minimizing the formation of a weld bead protruding outwards.
  • the presence of a protruding weld bead could compromise the insertion of the reinforcing bar into the relevant profiled element for window/door frames.
  • the reinforcing bars are generally provided with a section that settles to size in the cavity defined by the profiled element for window/door frames and a protruding weld bead would prevent the insertion thereof.
  • This process therefore, allows further fixing this technical problem and avoiding subsequent machining of the reinforcing bars 100 and, in this sense, allows further reducing production timeline.
  • the sub-phase of joining is carried out so that the thickness of the protruding weld bead is less than a minimum value.
  • the minimum value is determined depending on the dimensions of the internal cavity of the profiled element for window/door frames and the cross-sectional dimensions of the reinforcing bar 100. As a result, for example, while in some cases a protruding bead of 2 mm thickness might still allow the reinforcing bar 100 to be inserted inside the relevant profiled element for window/door frames, in other cases even just a protruding bead of 0.5 mm thickness might compromise this operation.
  • the sub-phase of joining is carried out after the phase of application of the electrode assemblies 14, 15.
  • the sub-phase of joining is carried out prior to the phase of application of the electrode assemblies 14, 15.
  • the ending surfaces 4, 5 are first joined and placed in contact with each other, after which voltage is applied to the second bar 3 and to the residual bar 7.
  • the phase of welding comprises a sub-phase of mutual compression of the ending surfaces 4, 5.
  • the electrode assemblies 14, 15 are moved away from the second bar 3 and from the residual bar 7, thus interrupting the current flow and allowing the metallic material to cool.
  • the sub-phase of compression is carried out for a time of between 0.5” and 7”, preferably of between 0.5” and 1.5”.
  • the sub-phase of compression is carried out at a pressure of between 1 Pa and 10 MPa.
  • the second bar 3 and the residual bar 7 are joined together through a welding area 12 that is substantially continuous, strong and provided with a contained weld bead.
  • this process allows for autogenous welding which, as known to the technician in the field, allows metallic materials to be joined without the use of the filler material.
  • the filler materials are materials that are heated up to fusion and are transferred to the area to be welded. Once solidified, the filler materials operate as a bridge between the welded parts. However, the filler material is not always the same as the metal parts to be welded and may have different physical and mechanical properties. In addition, the welding times using filler materials are generally very long.
  • the phase of resistance welding makes it possible to achieve, in a very short time, a continuity of material of the reinforcing bar 100 thus making the welding area 12 sufficiently strong and robust and avoiding possible differences in the physical-mechanical behavior caused by the use of the filler materials.
  • the plant 1 comprises holding means 6 adapted to hold at least the first bar 2 and the second bar 3.
  • the holding means 6 comprise a holding surface 17 adapted to receive and support the bars 2, 3 arranged substantially side by side and parallel to each other.
  • the holding means 6 comprise a set of arms 18 extending along relevant directions of development, arranged substantially parallel to each other and defining the holding surface 17.
  • the arms 18 are adapted to hold the bars 2, 3 with the relevant longitudinal directions substantially perpendicular to the development directions.
  • the plant 1 also comprises positioning means 9 associated with the holding means 6 and adapted to move the bars 2, 3, 7, 10 along the direction of forward movement D.
  • the positioning means 9 are configured to move the bars 2, 3, 7, 10 as they move towards the cutting means 8.
  • the positioning means 9 are adapted to move each bar 2, 3, 7, 10 from an operating station, defined on the holding means 6, to a cutting station, defined on the cutting means 8.
  • the process comprises a phase of movement of the first bar 2 along the direction of forward movement D, carried out by means of the positioning means 9 ( Figure 1).
  • the positioning means 9 determine the forward movement of the first bar 2 with respect to the cutting means 8 by the distance corresponding to the length of the reinforcing bar 100 to be produced.
  • the positioning means 9 comprise at least one pusher body 19 adapted to abut against the second ending surface 5 of the first bar 2.
  • the pusher body 19 is movable by sliding along the direction of forward movement D to push the first bar 2 from the operating station to the cutting station.
  • the positioning means 9 also comprise at least one guiding unit 20 associated with the holding means 6, which extends parallel to the direction of forward movement D and supports the pusher body 19 by sliding.
  • the positioning means 9 then comprise at least one movement unit 21 adapted to move the pusher body 19 by sliding along the direction of forward movement D.
  • the movement unit 21 comprises a rack body 22 extending parallel to the direction of forward movement D, a pinion associated with the pusher body 19 and meshing on the rack body 22 and an actuator device 23 connected to the pinion and adapted to set the latter in rotation.
  • the rotation of the pinion causes the pusher body 19 to slide along the direction of forward movement D.
  • the movement unit 21 allows extremely precise and accurate movement of the bars 2, 3, 7, 10 and enables their forward movement by a distance corresponding to the length of the reinforcing bar 100 one wishes to obtain.
  • the plant 1 also comprises cutting means 8 adapted to cut the bars 2, 3, 10.
  • the cutting means 8 comprise a cutting device 24 adapted to cut the bar 2, 3, 10 along a cutting plane transversal to the relevant longitudinal direction.
  • the cutting plane is substantially perpendicular to the longitudinal direction. It cannot, however, be ruled out that the cutting plane may be inclined with respect to the longitudinal direction.
  • the cutting device 24 comprises a blade tool.
  • the cutting device 24 comprises a plasma device.
  • the process comprises a phase of positioning the residual bar 7 in a welding station ( Figure 2).
  • the welding station is defined by the resistance welding means 11 , which are positioned between the holding means 6 and the cutting means 8.
  • the phase of positioning the residual bar 7 is carried out by means of the positioning means 9.
  • the process then comprises the phase of positioning the second bar 3 aligned with the residual bar 7, with the first ending surface 4 of the second bar 3 facing the second ending surface 5 of the residual bar 7 ( Figure 3).
  • the phase of positioning of the second bar 3 is also carried out by means of the positioning means 9.
  • the plant 1 also comprises retaining means 25 adapted to retain the residual bar 7 and the second bar 3.
  • the retaining means 25 are associated with the resistance welding means 11.
  • the retaining means 25 comprise a first retaining assembly 26 of the residual bar 7 and a second retaining assembly 27 of the second bar 3.
  • Each of the retaining assemblies 26, 27 comprises a bearing plane 28 that is substantially horizontal and adapted to receive and support the relevant bar 3, 7 and an abutment wall 29 that is substantially vertical and parallel to the direction of forward movement D and adapted to receive the relevant bar 3, 7 in abutment.
  • Each of the retaining assemblies also comprises a clamping assembly 30 which can be operated to keep the bars 3, 7 secured to the relevant abutment walls 29.
  • the clamping assembly 30 is associated with the bearing plane 28 and is of the type of a vice operated horizontally by a pneumatic cylinder.
  • the electrode assemblies 14, 15 are, therefore, applied to the relevant bars 3, 7 ( Figure 4).
  • the electrode assemblies 14, 15 are associated with the retaining means 25.
  • first electrode assembly 14 is associated with the abutment wall 29 of the first retaining assembly 26 and the second electrode assembly 15 is associated with the abutment wall 29 of the second retaining assembly 27.
  • the electrode assemblies 14, 15 are movable with respect to the retaining means 25 between a home position, wherein they are moved away from the residual bar 7 and from the second bar 3, and a work position, wherein they are in contact with the residual bar 7 and with the second bar 3 and cause the current flow.
  • the resistance welding means 11 comprise actuating means 34 of the pneumatic type adapted to move the electrode assemblies 14, 15 between the home position and the work position.
  • the electrode assemblies 14, 15 each comprise a plurality of electrodes 35 that are substantially flat and adapted to adhere to the surface of the bars 3, 7.
  • the electrodes 35 are electrodes of the braided copper type.
  • the electrode assemblies 14, 15 have an extended contact surface with the relevant bars 3, 7, which allows effective current transmission and avoids excessive heat generation.
  • the resistance welding means 11 comprise a displacement system 31 adapted to mutually move the retaining assemblies 26, 27 between a moving away position, wherein the ending surfaces 4, 5 are spaced apart from each other, and a moving close position, wherein the ending surfaces 4, 5 are joined and pressed to each other.
  • first retaining assembly 26 is fixed with respect to the resistance welding means 11 while the second retaining assembly 27 is movable between the moving away position and the moving close position.
  • a reverse configuration cannot however be ruled out, i.e., one in which the second retaining assembly 27 is fixed with respect to the resistance welding means 11 while the first retaining assembly 26 is movable between the moving away position and the moving close position.
  • the displacement system 31 comprises a guiding body 32 associated with the resistance welding means 11, extending parallel to the direction of forward movement D and supporting the bearing plane 28 of the second retaining assembly 27 by sliding.
  • the displacement system 31 then comprises an actuator 33 positioned between the resistance welding means 11 and the second retaining assembly 27.
  • the actuator 33 comprises a fixed part, associated with the resistance welding means 11, and a movable part connected to the bearing plane 28 of the second retaining assembly 27.
  • the displacement system 31 comprises a motorized actuator 33.
  • the actuator 33 therefore, allows moving the retaining means 25 in an extremely precise and accurate manner, enabling their position to be adjusted punctually.
  • the process then comprises the sub-phase of compression, which is also carried out by means of the displacement system 31 ( Figure 7).
  • the actuator 33 allows the position of the retaining assemblies 26, 27 to be adjusted during the phase of joining and the pressure given to the bars 3, 7 to be adjusted during the phase of compression.
  • the electrode assemblies 14, 15 are moved to the home position, wherein they are moved away from the bars 3, 7, to open the electric circuit and to allow the cooling of the welding area 12.
  • clamping assemblies 30 are also operated to release the welded bar 10.
  • the positioning means 9 are operated to move the welded bar 10 forward along the direction of forward movement D and allow repeating the phases of cutting, positioning and welding for the welded bar 10 ( Figure 8).
  • the present invention also refers to a plant 1 for the manufacture of reinforcing bars 100 for profiled elements for window/door frames.
  • the plant 1 comprises: holding means 6 adapted to hold at least one first bar 2 and one second bar 3 made of at least one metallic material and extending along relevant longitudinal directions, each provided with a first ending surface 4 and with a second ending surface 5 substantially perpendicular to the relevant longitudinal direction; cutting means 8 adapted to cut the first bar 2 to obtain at least one reinforcing bar 100 insertable inside a relevant profiled element for window/door frames and a relevant residual bar 7 provided with the second ending surface 5; positioning means 9 adapted to move each of the bars 2, 3, 7 along at least one direction of forward movement D substantially parallel to the relevant longitudinal direction; retaining means 25 adapted to retain the residual bar 7 and the second bar 3 aligned to each other with respect to the direction of forward movement D, with the second ending surface 5 of the residual bar 7 facing the first ending surface 4 of the second bar 3; resistance welding means 11 adapted to butt weld the residual bar 7 and the second bar 3 by means of a current flow through the ending surfaces 4, 5 facing each other to obtain a welded bar 10.
  • the present process and plant allow avoiding interruptions in the manufacture process and optimizing the operational timelines.
  • the process and the plant according to the invention enable the production and operating costs of the production plant to be kept low.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

Le procédé comprend les phases suivantes consistant à : fournir une première barre (2) et une seconde barre (3) constituées d'un matériau métallique et s'étendant le long de directions longitudinales pertinentes, chacune d'entre elles présentant une première surface d'extrémité (4) et une seconde surface d'extrémité (5) ; couper la première barre (2) pour obtenir une barre d'armature (100) pouvant être insérée dans un élément profilé pertinent pour des dormants de fenêtre/porte et une barre résiduelle (7) présentant la seconde surface d'extrémité (5) ; positionner la seconde barre (3) alignée avec la barre résiduelle (7) relativement à une direction de déplacement vers l'avant (D) sensiblement parallèle auxdites directions longitudinales, la première surface d'extrémité (4) de la seconde barre (3) faisant face à la seconde surface d'extrémité (5) de la barre résiduelle (7) ; souder en bout par résistance la seconde barre (3) et la barre résiduelle (7) au moyen d'un écoulement de courant à travers les surfaces d'extrémité (4, 5) se faisant face pour obtenir une barre soudée (10).
PCT/IB2022/062317 2021-12-30 2022-12-15 Procédé et installation de fabrication de barres d'armature pour des éléments profilés pour des dormants de fenêtre/porte WO2023126746A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102021000033134 2021-12-30
IT102021000033134A IT202100033134A1 (it) 2021-12-30 2021-12-30 Procedimento e impianto per la produzione di barre di rinforzo per profilati per serramenti

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WO2023126746A1 true WO2023126746A1 (fr) 2023-07-06

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Country Link
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WO (1) WO2023126746A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192921A1 (fr) * 1985-02-25 1986-09-03 GTI Glastechnische Industrie Peter Lisec Gesellschaft m.b.H. Dispositif pour souder bout à bout
EP0291499B2 (fr) * 1987-05-11 1997-01-29 Peter Lisec Dispositif pour la fabrication de cadres d'espacement pour vitres isolantes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0192921A1 (fr) * 1985-02-25 1986-09-03 GTI Glastechnische Industrie Peter Lisec Gesellschaft m.b.H. Dispositif pour souder bout à bout
EP0291499B2 (fr) * 1987-05-11 1997-01-29 Peter Lisec Dispositif pour la fabrication de cadres d'espacement pour vitres isolantes

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